What is the best practice or design pattern to maintain sync activity across multiple views?

Scenario : Shared/Sync'd Realm. iOS/Swift App with multiple views.

What is the best practice design pattern I should use to in order to maintain synchronisation in the background - and - provide automatic (real time) updates to multiple views?

Looking at the extra task app - this makes sense but the app really only has one active view. What if I have multiple views?

Should I destroy the Realm notification of data change and rebuild for each view?